<template>
   <div class="app-container"> 
     <!-- 顶部区域 -->
     <mt-header fixed title="vue小项目">
        <span to="/" slot="left" @click="goBack" v-show="flag">
          <mt-button icon="back">返回</mt-button>
        </span>
     </mt-header>
    
     <!-- 中间部分区域 -->
     <transition>
        <router-view></router-view>
     </transition>
  
     
     <!-- 底部区域 -->
     <nav class="mui-bar mui-bar-tab">
        <router-link class="mui-tab-item-llb" to="/home">
          <span class="mui-icon mui-icon-home"></span>
          <span class="mui-tab-label">首页</span>
        </router-link>
        <router-link class="mui-tab-item-llb" to="/member">
          <span class="mui-icon mui-icon-contact"></span>
          <span class="mui-tab-label">会员</span>
        </router-link>
        <router-link class="mui-tab-item-llb" to="/shopcar">
          <span class="mui-icon mui-icon-extra mui-icon-extra-cart">
            <span class="mui-badge" id="badge">{{ this.$store.getters.getAllCount }}</span>
          </span>
          <span class="mui-tab-label">购物车</span>
        </router-link>
        <router-link class="mui-tab-item-llb" to="/search">
          <span class="mui-icon mui-icon-search"></span>
          <span class="mui-tab-label">搜索</span>
        </router-link>
      </nav>

   </div>
</template>

<script>
export default {
  data(){
    return {
      flag:false
    }
  },
   created(){
    this.flag = this.$route.path == "/home"?false:true
   },
  methods:{
     goBack(){
      //  点击返回
        this.$router.go(-1)
     }
  },
  watch:{
    '$route.path':function(newVal){
      if(newVal == "/home"){
       this.flag =  false;
      }
      else{
        this.flag = true
      }
    }
  }
}

</script>

<style lang="scss" scoped>

  .mint-header{
    z-index:99;
  }
   .app-container{
        background-color: #fff;
        padding-top:40px;
        padding-bottom: 50px;
        overflow-x:hidden;
   }

   .v-enter{
    opacity: 0;
    transform:translateX(100%);
   }
   .v-leave-to{
     opacity: 0;
     transform:translateX(-100%);
     position:absolute;
   }

   .v-enter-active,
   .v-leave-active{
     transition: all 0.5s ease;
   }


/* 修改类名  解决tabbar无法切换的问题 */
.mui-bar-tab .mui-tab-item-llb.mui-active {
    color: #007aff;
}

.mui-bar-tab .mui-tab-item-llb {
    display: table-cell;
    overflow: hidden;
    width: 1%;
    height: 50px;
    text-align: center;
    vertical-align: middle;
    white-space: nowrap;
    text-overflow: ellipsis;
    color: #929292;
}

.mui-bar-tab .mui-tab-item-llb .mui-icon {
    top: 3px;
    width: 24px;
    height: 24px;
    padding-top: 0;
    padding-bottom: 0;
}

.mui-bar-tab .mui-tab-item-llb .mui-icon ~ .mui-tab-label {
    font-size: 11px;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
}

</style>

